“I hope I don’t get kicked out of Yale for this,” wrote Yale student Sean Haufler in a blog post explaining why he had created the Chrome extension Banned Bluebook.

Haufler made the extension in response to the uproar last week over the university’s reaction to a student-made site, originally called Yale BlueBook+ and later renamed CourseTable which made it possible to compare course evaluations at a glance. The creators of that site, fellow students Harry Yu and Peter Xu, were threatened with a disciplinary committee unless they took it down.